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Preliminary evidence for an association between a dopamine D3 receptor gene variant and obsessive‐compulsive personality disorder in patients with major depression
Author(s) -
Light Katrina J.,
Joyce Peter R.,
Luty Suzanne E.,
Mulder Roger T.,
Frampton Christropher M.A.,
Joyce Laura R.M.,
Miller Allison L.,
Kennedy Martin A.
Publication year - 2006
Publication title -
american journal of medical genetics part b: neuropsychiatric genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.393
H-Index - 126
eISSN - 1552-485X
pISSN - 1552-4841
DOI - 10.1002/ajmg.b.30308
Subject(s) - temperament and character inventory , psychology , depression (economics) , temperament , clinical psychology , persistence (discontinuity) , anxiety , personality , association (psychology) , psychiatry , psychotherapist , social psychology , geotechnical engineering , economics , macroeconomics , engineering
We have previously reported that the Ser9Gly dopamine D3 receptor (DRD3) polymorphism was associated with increased rates of obsessive‐compulsive personality disorder (OCPD) symptomology. We tested the replicability of this association within a further two independent groups of individuals with a history of depression, from a clinical sample (n = 149) and a family study (n = 213). The data from the replication samples and the original sample, within which the association was found, were compiled within a meta‐analysis. Although the independent samples did not replicate the original finding, the meta‐analysis elucidated significant evidence supporting the association. An individual with Gly/Gly genotype is 2.4 ( P = 0.017) times more likely to be diagnosed with OCPD. Male gender was also found to be a significant predictor of OCPD diagnosis (OR = 2.82, P = 0.001). An exploration of an association of DRD3 with Axis I anxiety disorder diagnoses and Temperament and Character Inventory (TCI) traits, in particular persistence, revealed no support for an association. We conclude that DRD3 may contribute to the development of OCPD. © 2006 Wiley‐Liss, Inc.